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Finding the Fourth Proportional to 15,552.84, 21,459.38 and 13,045.08

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Solution

The fourth proportional to 15,552.84, 21,459.38 and 13,045.08 is: 17,999.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,552.84 : 21,459.38 = 13,045.08 : x
  2. Step 2: Convert to fraction form
    15,552.84/21,459.38 = 13,045.08/x
  3. Step 3: Cross multiply
    15,552.84x = 21,459.38 × 13,045.08
  4. Step 4: Simplify right side
    15,552.84x = 279,939,328.85
  5. Step 5: Solve for x
    x = 279,939,328.85/15,552.84
  6. Step 6: Final answer
    x = 17,999.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.